scope:

This Standard specifies test methods for determining efficacy of textile products against house dust mites. The methods covered in this Standard applies to textile products treated chemically for suppressing house dust mites and textile products treated physically for preventing house dust mites from passing through.

This Standard covers the repelling method and proliferation method intended for textile products treated chemically for suppressing house dust mites, and the penetration method intended for textile products treated physically for preventing house dust mites from passing through. Each test method is further classified as follows.

- Repelling method, using either Petri-dish or glass tube. The glass tube method is further classified into method A and method B according to the applicable textile products.

- Proliferation method, classified into method A and method B according to the type and shape of applicable textile products. The two methods use different test containers.

- Penetration method, a material test as with the repelling method and proliferation method. It is generally applied to fabric materials, but can also be applied to fabrics containing sewing lines or fasteners depending on their shape or size. This method is not applicable to textile products that stop the mites at the fibre layer without allowing them to penetrate through the fabric.

Application of these methods according to the type, shape, size, etc. of textile products is as follows.

- Petri-dish method, applied to carpet, bedding surface fabric, bed sheeting, bed covering, blanket, etc.

- Glass tube method A, applied to wadding, etc. with a fibre content of cotton, wool, synthetic fibre, etc.

- Glass tube method B, applied to feathers/down, etc.

- Proliferation method A, applied to carpet, bedding surface fabric, bed sheeting, bed covering, blanket, etc.

- Proliferation method B, applied to wadding, etc.

- Penetration method, applied to bedding surface fabric, bed sheeting, bed covering, surface fabric of mattress, etc.

NOTE The International Standard corresponding to this Standard and the symbol of degree of correspondence are as follows.

ISO 21326 : 2019 Textiles - Test methods for determining the efficiency of products against house dust mite (MOD)

In addition, symbols which denote the degree of correspondence in the contents between the relevant International Standard and JIS are IDT (identical), MOD (modified), and NEQ (not equivalent) according to ISO/IEC Guide 21-1.